Question

prove that √5 is irrational number​

Answer 1

Answer:

let, us assume that root 5 is not irrational number.

so Root 5 is rational number

5²=p²/q² taking square both side

5q²=p²

if 5q² is even number

p² also even number

then this is contradictory and

or assumption is wrong

root 5 is an irrational number